Clasificación de la Biblioteca del CongresoQK475.8

Africa(119) agriculture(48) animals(227) art(163) beans(46) biology(827) birds(64) botany(3,211) Britain(81) California(149) Canada(89) carnivorous plants(19) children(198) children's(263) children's literature(80) conservation(73) cultivation(25) desert(210) deserts(54) earth(69) Eastern United States(25) ecology(500) ecosystems(31) environment(386) Europe(89) fall(287) flowers(372) food(94) forest(133) garden(239) gardening(902) gardens(81) growing(72) guide(294) guidebook(180) handbook(40) history(232) horticulture(284) informational(195) juvenile(70) juvenile non-fiction(35) leaves(289) life cycle(289) life science(132) natural science(72) natural world(35) nature(3,656) nature writing(34) New Mexico(37) North America(343) oak trees(18) outdoors(84) photographs(72) photography(124) picture book(690) reference(1,100) roots(38) science(2,826) science nonfiction(44) seed(35) Southwest(78) spring(167) sunflowers(65) Texas(69) tree(313) trees(6,864) tropical(23) usa(159) weather(68) winter(83) wood(68) woods(36)